I'm not expert, but paint stripper likely won't do much. You'll probably have better luck with some type of acid, like Muriatic for instance. You'll definitely want to be outside for this, with adequate ventalation. Where the appropriate PPE and if you dilute the acid, remember to add acid to water, and not water to the acid.
You could possibly even get away with using a preheated vinegar solution. It just migh take a little longer.